WIRELESS INTRUSION DETECTION SOLUTION FOR IDLE-MODE CELLULAR DEVICES

• US 20110230171A1
• Filed: 05/28/2009
• Published: 09/22/2011
• Est. Priority Date: 05/28/2008
• Status: Abandoned Application

• Current Assignee: 11i Networks, Inc.
• Original Assignee: 11i Networks, Inc.
• Inventors: Kasper, Mark Edward
• Application Number:
  US12/474,256
• Publication Number:
  US 20110230171A1
• Time in Patent Office: Days
• US Class Current: 455/414.1
• CPC Class Codes: G08B 13/2491 Intrusion detection systems, i.e. where the body of an intruder causes the interference with the electromagnetic field
• CPC Class Codes: G08B 21/0261 System arrangements wherein the object is to detect trespassing over a fixed physical boundary, e.g. the end of a garden
• CPC Class Codes: H04W 48/02 Access restriction performed under specific conditions

Abstract

Systems and methods for wireless intrusion detection are described. Small scale wireless systems are configured to transmit commands to cellular devices located within a controlled or secure area. One or more detection systems are configured to identify presence of wireless devices within the controlled area based on a radio frequency (RF) transmission of the wireless devices in response to the commands. The microcellular wireless system operates independently of a provider of wireless service to the detected wireless device. The detection system can identify location of the detected wireless device within the controlled area.

Claims

1. A wireless intrusion detection system for cellular devices, comprising:

a small scale wireless system configured to transmit commands to cellular devices located within a controlled area;

a detection system configured to identify presence of wireless devices within the controlled area based on a radio frequency (RF) transmission of the wireless devices, wherein a wireless device is detected when it transmits a response to one or more of the commands, and wherein the microcellular wireless system operates independently of a provider of wireless service to the detected wireless device.

2. The system of claim 1, wherein the wireless service is a planned land mobile network (PLMN) service.

3. The system of claim 2, wherein the detection system further identifies location of the detected wireless device within the controlled area.

4. The system of claim 3, wherein the system comprises a plurality of detection systems configured to identify presence of wireless devices.

5. The system of claim 4, wherein the location of the detected wireless device is identified by time of arrival at one or more of the plurality of detection systems.

6. The system of claim 4, wherein the location of the detected wireless device is identified by power triangulation.

7. The system of claim 2, wherein the small scale wireless system is a microcellular system.

8. The system of claim 7, wherein parameters of the microcellular system are synchronized with corresponding parameter settings associated with the PLMN service.

9. The system of claim 3, wherein the wireless device is a cellular telephone.

10. The system of claim 9, wherein the commands include a user generated command.

11. The system of claim 10, wherein the user generated command comprises a call set up request.

12. The system of claim 10, wherein the commands include a messaging command.

13. The system of claim 9, wherein the commands include a paging request.

14. The system of claim 2, wherein the commands are transmitted according to a schedule calculated based on the size of the controlled area.